brown stains along rim of pool, vitamin c does not remove stain, idea?

[waterbear]

Great thread waterbear! I have a questions though - the proteam says it will "remove metals from the water" and can be filtered out. Is this true? I thought there wasn't anything to use to remove the metal - you just had to keep it in suspension. Please, Please, tell me that it is true that the proteam will remove metals so they can be filtered out!

As far as I know that one is as true as the tooth fairy and the easter bunny! However, if their process is allowing the metals to fall out of solution (as they put it 'crystalize' ) then the filter WILL collect the precipitate and you will be able to remove some of the metal from the system. I don't know for sure but possibly the stain dissolves and the sequesterant reaches some sort of saturation point and the metals fall out of solutoin but not as stain but as a precipitate. It's possible....We need chem geek here to figure this one out for us. I do know that some of my customers have had good results with the Proteam when ascorbic acid didn't work but it won't work on all metal stains....some of the heavily oxidized copper stains are next to impossible to remove.
I use metal magic in my own pool. I guess I can stop adding it for a while to see if the stains come back or if my water starts testing positive for iron again. But that means I might have to treat the stains again.....hmmm, have to think about that one to see if I really want to do the experiemnt for the commen good! Marie, I am sure that you of all people understand!